<?php
/**
 * Smarty Internal Plugin Compile Block
 *
 * Compiles the {block}{/block} tags
 *
 * @package Smarty
 * @subpackage Compiler
 * @author Uwe Tews
 */

/**
 * Smarty Internal Plugin Compile Block Class
 *
 * @package Smarty
 * @subpackage Compiler
 */
class Smarty_Internal_Compile_Block extends Smarty_Internal_CompileBase {

	/**
	 * Attribute definition: Overwrites base class.
	 *
	 * @var array
	 * @see Smarty_Internal_CompileBase
	 */
	public $required_attributes = array('name');
	/**
	 * Attribute definition: Overwrites base class.
	 *
	 * @var array
	 * @see Smarty_Internal_CompileBase
	 */
	public $shorttag_order = array('name', 'hide');
	/**
	 * Attribute definition: Overwrites base class.
	 *
	 * @var array
	 * @see Smarty_Internal_CompileBase
	 */
	public $optional_attributes = array('hide');

	/**
	 * Compiles code for the {block} tag
	 *
	 * @param array  $args     array with attributes from parser
	 * @param object $compiler compiler object
	 * @return boolean true
	 */
	public function compile($args, $compiler)
	{
		// check and get attributes
		$_attr = $this->getAttributes($compiler, $args);
		$save = array($_attr, $compiler->parser->current_buffer, $compiler->nocache, $compiler->smarty->merge_compiled_includes);
		$this->openTag($compiler, 'block', $save);
		if ($_attr['nocache'] == true) {
			$compiler->nocache = true;
		}
		// set flag for {block} tag
		$compiler->inheritance = true;
		// must merge includes
		$compiler->smarty->merge_compiled_includes = true;

		$compiler->parser->current_buffer = new _smarty_template_buffer($compiler->parser);
		$compiler->has_code = false;
		return true;
	}

	/**
	 * Save or replace child block source by block name during parsing
	 *
	 * @param string $block_content     block source content
	 * @param string $block_tag         opening block tag
	 * @param object $template          template object
	 * @param string $filepath          filepath of template source
	 */
	public static function saveBlockData($block_content, $block_tag, $template, $filepath)
	{
		$_rdl = preg_quote($template->smarty->right_delimiter);
		$_ldl = preg_quote($template->smarty->left_delimiter);

		if (0 == preg_match("!({$_ldl}block\s+)(name=)?(\w+|'.*'|\".*\")(\s*?)?((append|prepend|nocache)?(\s*)?(hide)?)?(\s*{$_rdl})!", $block_tag, $_match)) {
			$error_text = 'Syntax Error in template "' . $template->source->filepath . '"   "' . htmlspecialchars($block_tag) . '" illegal options';
			throw new SmartyCompilerException($error_text);
		} else {
			$_name = trim($_match[3], '\'"');
			if ($_match[8] != 'hide' || isset($template->block_data[$_name])) {        // replace {$smarty.block.child}
				if (strpos($block_content, $template->smarty->left_delimiter . '$smarty.block.child' . $template->smarty->right_delimiter) !== false) {
					if (isset($template->block_data[$_name])) {
						$block_content = str_replace($template->smarty->left_delimiter . '$smarty.block.child' . $template->smarty->right_delimiter,
						$template->block_data[$_name]['source'], $block_content);
						unset($template->block_data[$_name]);
					} else {
						$block_content = str_replace($template->smarty->left_delimiter . '$smarty.block.child' . $template->smarty->right_delimiter,
                        '', $block_content);
					}
				}
				if (isset($template->block_data[$_name])) {
					if (strpos($template->block_data[$_name]['source'], '%%%%SMARTY_PARENT%%%%') !== false) {
						$template->block_data[$_name]['source'] =
						str_replace('%%%%SMARTY_PARENT%%%%', $block_content, $template->block_data[$_name]['source']);
					} elseif ($template->block_data[$_name]['mode'] == 'prepend') {
						$template->block_data[$_name]['source'] .= $block_content;
					} elseif ($template->block_data[$_name]['mode'] == 'append') {
						$template->block_data[$_name]['source'] = $block_content . $template->block_data[$_name]['source'];
					}
				} else {
					$template->block_data[$_name]['source'] = $block_content;
					$template->block_data[$_name]['file'] = $filepath;
				}
				if ($_match[6] == 'append') {
					$template->block_data[$_name]['mode'] = 'append';
				} elseif ($_match[6] == 'prepend') {
					$template->block_data[$_name]['mode'] = 'prepend';
				} else {
					$template->block_data[$_name]['mode'] = 'replace';
				}
			}
		}
	}

	/**
	 * Compile saved child block source
	 *
	 * @param object $compiler  compiler object
	 * @param string $_name     optional name of child block
	 * @return string   compiled code of schild block
	 */
	public static function compileChildBlock($compiler, $_name = null)
	{
		$_output = '';
		// if called by {$smarty.block.child} we must search the name of enclosing {block}
		if ($_name == null) {
			$stack_count = count($compiler->_tag_stack);
			while (--$stack_count >= 0) {
				if ($compiler->_tag_stack[$stack_count][0] == 'block') {
					$_name = trim($compiler->_tag_stack[$stack_count][1][0]['name'] ,"'\"");
					break;
				}
			}
			// flag that child is already compile by {$smarty.block.child} inclusion
			$compiler->template->block_data[$_name]['compiled'] = true;
		}
		if ($_name == null) {
			$compiler->trigger_template_error('{$smarty.block.child} used out of context', $compiler->lex->taglineno);
		}
		// undefined child?
		if (!isset($compiler->template->block_data[$_name]['source'])) {
			return '';
		}
		$_tpl = new Smarty_Internal_template ('string:' . $compiler->template->block_data[$_name]['source'], $compiler->smarty, $compiler->template, $compiler->template->cache_id,
		$compiler->template->compile_id = null, $compiler->template->caching, $compiler->template->cache_lifetime);
		$_tpl->variable_filters = $compiler->template->variable_filters;
		$_tpl->properties['nocache_hash'] = $compiler->template->properties['nocache_hash'];
		$_tpl->source->filepath = $compiler->template->block_data[$_name]['file'];
		$_tpl->allow_relative_path = true;
		if ($compiler->nocache) {
			$_tpl->compiler->forceNocache = 2;
		} else {
			$_tpl->compiler->forceNocache = 1;
		}
		$_tpl->compiler->suppressHeader = true;
		$_tpl->compiler->suppressTemplatePropertyHeader = true;
		$_tpl->compiler->suppressMergedTemplates = true;
		if (strpos($compiler->template->block_data[$_name]['source'], '%%%%SMARTY_PARENT%%%%') !== false) {
			$_output = str_replace('%%%%SMARTY_PARENT%%%%', $compiler->parser->current_buffer->to_smarty_php(), $_tpl->compiler->compileTemplate($_tpl));
		} elseif ($compiler->template->block_data[$_name]['mode'] == 'prepend') {
			$_output = $_tpl->compiler->compileTemplate($_tpl) . $compiler->parser->current_buffer->to_smarty_php();
		} elseif ($compiler->template->block_data[$_name]['mode'] == 'append') {
			$_output = $compiler->parser->current_buffer->to_smarty_php() . $_tpl->compiler->compileTemplate($_tpl);
		} elseif (!empty($compiler->template->block_data[$_name])) {
			$_output = $_tpl->compiler->compileTemplate($_tpl);
		}
		$compiler->template->properties['file_dependency'] = array_merge($compiler->template->properties['file_dependency'], $_tpl->properties['file_dependency']);
		$compiler->template->properties['function'] = array_merge($compiler->template->properties['function'], $_tpl->properties['function']);
		$compiler->merged_templates = array_merge($compiler->merged_templates, $_tpl->compiler->merged_templates);
		$compiler->template->variable_filters = $_tpl->variable_filters;
		if ($_tpl->has_nocache_code) {
			$compiler->template->has_nocache_code = true;
		}
		foreach($_tpl->required_plugins as $code => $tmp1) {
			foreach($tmp1 as $name => $tmp) {
				foreach($tmp as $type => $data) {
					$compiler->template->required_plugins[$code][$name][$type] = $data;
				}
			}
		}
		unset($_tpl);
		return $_output;
	}

}

/**
 * Smarty Internal Plugin Compile BlockClose Class
 *
 * @package Smarty
 * @subpackage Compiler
 */
class Smarty_Internal_Compile_Blockclose extends Smarty_Internal_CompileBase {

	/**
	 * Compiles code for the {/block} tag
	 *
	 * @param array  $args     array with attributes from parser
	 * @param object $compiler compiler object
	 * @return string compiled code
	 */
	public function compile($args, $compiler)
	{
		$compiler->has_code = true;
		// check and get attributes
		$_attr = $this->getAttributes($compiler, $args);
		$saved_data = $this->closeTag($compiler, array('block'));
		$_name = trim($saved_data[0]['name'], "\"'");
		if (isset($compiler->template->block_data[$_name]) && !isset($compiler->template->block_data[$_name]['compiled'])) {
			$_output = Smarty_Internal_Compile_Block::compileChildBlock($compiler, $_name);
		} else {
			if (isset($saved_data[0]['hide']) && !isset($compiler->template->block_data[$_name]['source'])) {
				$_output = '';
			} else {
				$_output = $compiler->parser->current_buffer->to_smarty_php();
			}
			unset ($compiler->template->block_data[$_name]['compiled']);
		}
		// reset flags
		$compiler->parser->current_buffer = $saved_data[1];
		$compiler->nocache = $saved_data[2];
		$compiler->smarty->merge_compiled_includes = $saved_data[3];
		// reset flag for {block} tag
		$compiler->inheritance = false;
		// $_output content has already nocache code processed
		$compiler->suppressNocacheProcessing = true;
		return $_output;
	}

}

?>